Improvement in nail-hammers



UNITEDN STATES PATENT OFFICE.

CHRISTOPHER G. DODGE, JR., OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN NAlL-HAMMERS.

Specication forming part of'Letters Patent No. 56,191, dated July l0, 1866..

To all 'whom it may concern:

Beitknown thatl, CHRISTOPHER G. DODGE, Jr., of the city and county of Providence, in the State of Rhode Island, have invented a new and useful article of manufacture, which I term a Combined Hammer and Screw- Driver 5 and I do hereby declare that the following speciiication, taken in connection with the drawings, making a part of the same, is a full, clear, and exact description thereof.

Figure l is a view, in perspective, of the article. Fig. 2 is a view of the screw-driver.

For household use no tools are more frequently in requisition than the hammer and the screw-driver 5 and that the two may be combined in a convenient form is the purpose of my invention.

Fig. l represents a hammer of ordinary construction, the handle B of which is equally serviceable and convenient whether elongated by the addition of the screw-driver handle or not. Around the longitudinal axis of the handle, and to the depth required-say, six inches, more or lessis made a cylindrical pocket, D, of sufficient diameter to take in the size of screw-driver desired, and upon the end of the pocket is tapped a screw-thread, a. If the handle be of hard wood with a tine grain, this thread may be cut in the wood itself, or the end of the pocket may be hushed with brass or other metal for the purpose of better sus` taining a thread. i

The screw-driver is shown at Fig. 2, and is provided with a handle of a size whichA will correspond with the handle of the hammer with which it is to be combined.

Around lthe shank of the blade is placed a collar, which is of wood or metal, as the case may be, and has a thread, b, cut upon its surface, corresponding in size with the thread cut in the end of the pocket D, so that the threads of the former can till the grooves of the latter and unite the handle of the screw-driver to the handle of the hammer when it is desired to sheathe the blade in the pocket.

With the article so constructed either tool can be used with the same convenience as if' they were disconnected; and when the screwdriver is not required the hammer can be used as conveniently as if the screw-.driver were 

